1; RUN: llc -O3 < %s
2; This test fails with:
3; Assertion failed: (!B && "UpdateTerminators requires analyzable predecessors!"), function updateTerminator, MachineBasicBlock.cpp, line 255.
4
5target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
6target triple = "x86_64-apple-darwin10.2"
7
8%"struct.llvm::InlineAsm::ConstraintInfo" = type { i32, i8, i8, i8, i8, %"struct.std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >" }
9%"struct.std::_Vector_base<llvm::InlineAsm::ConstraintInfo,std::allocator<llvm::InlineAsm::ConstraintInfo> >" = type { %"struct.std::_Vector_base<llvm::InlineAsm::ConstraintInfo,std::allocator<llvm::InlineAsm::ConstraintInfo> >::_Vector_impl" }
10%"struct.std::_Vector_base<llvm::InlineAsm::ConstraintInfo,std::allocator<llvm::InlineAsm::ConstraintInfo> >::_Vector_impl" = type { %"struct.llvm::InlineAsm::ConstraintInfo"*, %"struct.llvm::InlineAsm::ConstraintInfo"*, %"struct.llvm::InlineAsm::ConstraintInfo"* }
11%"struct.std::_Vector_base<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >" = type { %"struct.std::_Vector_base<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >::_Vector_impl" }
12%"struct.std::_Vector_base<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >::_Vector_impl" = type { %"struct.std::string"*, %"struct.std::string"*, %"struct.std::string"* }
13%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Alloc_hider" = type { i8* }
14%"struct.std::string" = type { %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Alloc_hider" }
15%"struct.std::vector<llvm::InlineAsm::ConstraintInfo,std::allocator<llvm::InlineAsm::ConstraintInfo> >" = type { %"struct.std::_Vector_base<llvm::InlineAsm::ConstraintInfo,std::allocator<llvm::InlineAsm::ConstraintInfo> >" }
16%"struct.std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >" = type { %"struct.std::_Vector_base<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >" }
17
18define zeroext i8 @_ZN4llvm9InlineAsm14ConstraintInfo5ParseENS_9StringRefERSt6vectorIS1_SaIS1_EE(%"struct.llvm::InlineAsm::ConstraintInfo"* nocapture %this, i64 %Str.0, i64 %Str.1, %"struct.std::vector<llvm::InlineAsm::ConstraintInfo,std::allocator<llvm::InlineAsm::ConstraintInfo> >"* nocapture %ConstraintsSoFar) nounwind ssp align 2 {
19entry:
20  br i1 undef, label %bb56, label %bb27.outer
21
22bb8:                                              ; preds = %bb27.outer108, %bb13
23  switch i8 undef, label %bb27.outer [
24    i8 35, label %bb56
25    i8 37, label %bb14
26    i8 38, label %bb10
27    i8 42, label %bb56
28  ]
29
30bb27.outer:                                       ; preds = %bb8, %entry
31  %I.2.ph = phi i8* [ undef, %entry ], [ %I.2.ph109, %bb8 ] ; <i8*> [#uses=2]
32  br label %bb27.outer108
33
34bb10:                                             ; preds = %bb8
35  %toBool = icmp eq i8 0, 0                       ; <i1> [#uses=1]
36  %or.cond = and i1 undef, %toBool                ; <i1> [#uses=1]
37  br i1 %or.cond, label %bb13, label %bb56
38
39bb13:                                             ; preds = %bb10
40  br i1 undef, label %bb27.outer108, label %bb8
41
42bb14:                                             ; preds = %bb8
43  ret i8 1
44
45bb27.outer108:                                    ; preds = %bb13, %bb27.outer
46  %I.2.ph109 = getelementptr i8* %I.2.ph, i64 undef ; <i8*> [#uses=1]
47  %scevgep = getelementptr i8* %I.2.ph, i64 undef ; <i8*> [#uses=0]
48  br label %bb8
49
50bb56:                                             ; preds = %bb10, %bb8, %bb8, %entry
51  ret i8 1
52}
53